See also:

Bluetooth audio
At a glance ▷ Music files on external devices such as audio devices or mobile phones can be played back via Bluetooth. Use of a mobile phone as an audio source ▷ The sound is output ...

Shoulder support
Also supports the back in the shoulder area: Results in a relaxed seating position. Reduces strain on the shoulder muscles. ...

Activating HDC
Press the button; the LED above the button lights up. ...